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Full Discussion: Running 3 shell script parallel in another shell script
Top Forums Shell Programming and Scripting Running 3 shell script parallel in another shell script Post 302932494 by sea on Thursday 22nd of January 2015 02:02:05 AM
Old 01-22-2015
Sure, if you let it only execute (set the limit to) one at a time.... it will do a sequence only / as well.

Just to be complete, if one tells the command the limit is 5, it will start t scripts at once in paralell.
And then check every few secs if one or more has ended.
So if 3 had ended, it can start another 3 at once.
If you set the limit to 1000, it could run a thousand scripst in paralell, but still would need to check every few secs, if some had ended and if there are remainings to start.

Its designed to work with more scripts, not just 3, but for some reason, 3 is always the question on the forum.

Also, its not (only) ment to run scripts in background, but also to let you know how they returned.

But guess/seems its an overkill for your needs.
 

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LEARN ABOUT LINUX

service

service(8)						      System Manager's Manual							service(8)

NAME

       service - run a System V init script

SYNOPSIS

       service SCRIPT COMMAND [OPTIONS]

       service --status-all

       service --help | -h | --version

DESCRIPTION

       service runs a System V init script in as predictable environment as possible, removing most environment variables and with current working
       directory set to /.

       The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT.  The  supported  values  of  COMMAND  depend  on  the
       invoked	script,  service  passes  COMMAND and OPTIONS it to the init script unmodified.  All scripts should support at least the start and
       stop commands.  As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the  start
       command.

       service --status-all runs all init scripts, in alphabetical order, with the status command.

EXIT CODES

       service calls the init script and returns the status returned by it.

FILES

       /etc/init.d
	      The directory containing System V init scripts.

ENVIRONMENT

       LANG, TERM
	      The only environment variables passed to the init scripts.

SEE ALSO

       /etc/init.d/skeleton,
       update-rc.d(8),
       init(8),
       invoke-rc.d(8).

								     Jan 2006								service(8)
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